Kilometers per Hour to Miles per Hour
1 km/h = 0.621371192 mph
Converter Calculator
1 Kilometers per Hour (km/h) = 0.621371 Miles per Hour (mph)
Explanation
Multiply by kilometers-to-miles ratio because both units already use the same hour denominator.
Common Conversion Values
| Kilometers per Hour (km/h) | Miles per Hour (mph) |
|---|---|
| 0.5 | 0.310686 |
| 1 | 0.621371 |
| 2 | 1.242742 |
| 5 | 3.106856 |
| 10 | 6.213712 |
| 20 | 12.427424 |
| 30 | 18.641136 |
| 60 | 37.282272 |
| 100 | 62.137119 |
| 120 | 74.564543 |
How to use this hub
- Choose a converter family.
- If converting to/from grams from a volume unit, select an ingredient.
- For pure unit changes (volume↔volume or weight↔weight), use universal conversions.
If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.
Frequently Asked Questions
What defines this conversion?
The factor is derived from exact meter, foot, mile, hour, and knot definitions.
Is the reverse conversion available?
Yes. Use the switch button or open the Miles per Hour (mph) to Kilometers per Hour (km/h) hub to view the mirror conversion.
Can I use decimals?
Yes. Decimal inputs are supported so fractional speed values remain precise in calculator output.